1. Protable mini boom speaker- Teeny Tweakers -Tiny pocket size with room filling sound 2.3.5mm audio plug , ... portable notebook USB 2.0 mini speaker, high end portable USB Mini speaker for mp3/mp4/iphone, Mini USB speaker ,Work with ... Frequency range:90Hz - 20 kHz,Output :2.5W+2.5Wm,distortion: 0.3% 1W 1KHz3.connects to Ipod,Iphone,Mp3 ... black/red colour high end portable notebook USB 2.0 mini speaker